"The fair jumping activities have been reduced from nearly 15 percent a year and a half ago, right now about five percent," he says. "So it's a huge improvement in fare inspection."

Li says Deputy Alex Ladwig was assaulted and shot with his own gun after approaching a man to see if he had a ticket. Li says Ladwig was in good spirits when he visited him after the shooting.

Li says RT continues to add security measures. He says the system now has more than two-thousand cameras, including 20 at the Watt Avenue station alone. Li says they are also putting in public announcing systems at each station.